Medical center-based follow up For infants who were discharged home on supplemental oxygen, the nurse specialist made a home visit 1 to 2 weeks after discharge. During this visit, the nurse specialist obtained interim medical history, performed physical assessment including pulse oximetry and body weight, reviewed discharge instructions regarding medication dosage and use of durable medical equipment, and answered caregiver's questions about the infant's care. If the nurse specialist had concerns about the medical condition of the infant, she made changes to the plan of care after consultation with the study neonatologist.